SPA shell pillow



FIG. 1 is a perspective view of an embodiment of a spa shell pillow showing my new design;

FIG. 2 is a top view of the spa shell pillow of FIG. 1;

FIG. 3 is a side view illustrating the front side of the spa shell pillow of FIG. 1;

FIG. 4 is a side view illustrating the right side of the spa shell pillow of FIG. 1, which is not visible in FIG. 1;

FIG. 5 is a bottom view of the spa shell pillow of FIG. 1; and,

FIG. 6 is a side view illustrating the back side of the spa shell pillow, which is not visible in FIG. 1. 

The ornamental design for a spa shell pillow, as shown and described. 